H3C Technologies H3C S7500E Series Switches - Manual (Page 199)

13-47
You can use the display stp brief command to display brief spanning tree information on each device
after the network is stable.
# Display brief spanning tree information on Device A.
[DeviceA] display stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet2/0/1 ALTE DISCARDING NONE
0 GigabitEthernet2/0/2 DESI FORWARDING NONE
0 GigabitEthernet2/0/3 ROOT FORWARDING NONE
1 GigabitEthernet2/0/1 DESI FORWARDING NONE
1 GigabitEthernet2/0/3 DESI FORWARDING NONE
3 GigabitEthernet2/0/2 DESI FORWARDING NONE
3 GigabitEthernet2/0/3 ROOT FORWARDING NONE
# Display brief spanning tree information on Device B.
[DeviceB] display stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet2/0/1 DESI FORWARDING NONE
0 GigabitEthernet2/0/2 DESI FORWARDING NONE
0 GigabitEthernet2/0/3 DESI FORWARDING NONE
1 GigabitEthernet2/0/2 DESI FORWARDING NONE
1 GigabitEthernet2/0/3 ROOT FORWARDING NONE
3 GigabitEthernet2/0/1 DESI FORWARDING NONE
3 GigabitEthernet2/0/3 DESI FORWARDING NONE
# Display brief spanning tree information on Device C.
[DeviceC] display stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet2/0/1 DESI FORWARDING NONE
0 GigabitEthernet2/0/2 ROOT FORWARDING NONE
0 GigabitEthernet2/0/3 DESI FORWARDING NONE
1 GigabitEthernet2/0/1 ROOT FORWARDING NONE
1 GigabitEthernet2/0/2 ALTE DISCARDING NONE
4 GigabitEthernet2/0/3 DESI FORWARDING NONE
# Display brief spanning tree information on Device D.
[DeviceD] display stp brief
MSTID Port Role STP State Protection
0 GigabitEthernet2/0/1 ROOT FORWARDING NONE
0 GigabitEthernet2/0/2 ALTE DISCARDING NONE
0 GigabitEthernet2/0/3 ALTE DISCARDING NONE
3 GigabitEthernet2/0/1 ROOT FORWARDING NONE
3 GigabitEthernet2/0/2 ALTE DISCARDING NONE
4 GigabitEthernet2/0/3 ROOT FORWARDING NONE
Based on the above information, you can draw the MSTI corresponding to each VLAN, as shown in
Figure 13-11 .